# Commission Regulation (EEC) No 2568/91 of 11 July 1991 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis, Division 4.5.2: Fatty acids for calculation

Extent: E+W+S+N.I.

Glycerides are grouped by their Equivalent Carbon Number (ECN), taking into account the following equivalencies between ECN and fatty acids. Only fatty acids with 16 and 18 carbon atoms were taken into consideration, because only these are important for olive oil. The fatty acids should be normalised to 100 %.
Fatty acid (FA)
Abbreviation
Molecular weight (MW)
ECN
Palmitic acid
P
256,4
16
Palmitoleic acid
Po
254,4
14
Stearic acid
S
284,5
18
Oleic acid
O
282,5
16
Linoleic acid
L
280,4
14
Linolenic acid
Ln
278,4
12

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Source: https://www.legislation.gov.uk/eur/1991/2568/annex/XVIII/division/4/division/4.5/division/4.5.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-1991-2568/annex-XVIII/division-4/division-4.5/division-4.5.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.